塘底石——水乾先見 [－－－－－－干－见]

Jyutping tong4 dai2 sek6 — — seoi2 gon1 sin1 gin3
Pinyin táng dǐ shí —— shuǐ gàn xiān jiàn

Definitions (Wiktionary)
  1. phrase, Cantonese, idiomatic
    somebody whose true character only shows when they are broke